Kevin,
I believe Dominion Industries and CIL only made Boxer-primed ammunition. Boxer primers are in two stanard sizes: .175" and .210". Berdan primers come in several sizes, including .217" and .250".
If you were able to deprime the cases using a Lee Loader punch, they were Boxer-primed. The two points on the primer you were refering to are primer anvil supports, and those can be two, three, or sometimes four points. A Boxer primer contains it's own anvil. A Berdan primer does not contain an anvil, and uses the "tit" or anvil in the primer pocket of the cartridge case.
Berdan-primed cases USUALLY (but don't necessarily) have two flash holes to the side. Boxer-primed cases will always have the large central flashhole.
Hope that helps.